diff --git a/src/app/api/auth/refresh/route.js b/src/app/api/auth/refresh/route.js
index f65cb85..ea0d7db 100644
--- a/src/app/api/auth/refresh/route.js
+++ b/src/app/api/auth/refresh/route.js
@@ -36,6 +36,7 @@ export async function POST(req) {
           httpOnly: true,
           secure: isProd,
           sameSite: isProd ? 'none' : 'lax',
+          domain: isProd ? '.gdgocinha.com' : undefined,
         });
       });
     }
diff --git a/src/app/api/signin/route.js b/src/app/api/signin/route.js
index de80c8e..90970ea 100644
--- a/src/app/api/signin/route.js
+++ b/src/app/api/signin/route.js
@@ -43,6 +43,7 @@ export async function POST(request) {
           httpOnly: true,
           secure: isProd,
           sameSite: isProd ? 'none' : 'lax',
+          domain: isProd ? '.gdgocinha.com' : undefined,
         });
       });
     }